Well equipment



`.1. s. PAGE WELL EQUIPMENT 'sept 1s, 1951 2 Sheets-Sheerl 1 Filed April 19. 1946 INVENTOR.

C70-HN .S PAGE,

BY imqw/ Arme/Vex Sept. 18, 1951 Filed April 19'. 194e J. S. PAGE WELL EQUIPMENT 2 Sheets-Sheet 2 rroeusy.

Patented Sept. 18, 1951 WELL EQUIPMENT John S. Page, LongI Beach, Calif'. assignor to Page.

Oil Tools Inc., Long Beach, Calif., a. corporation of California This; invention has to do with well equipment and. is more specifically concerned with a device ilerv use in an oil well to facilitate the operation or production of the well after it has been drilled, andv it is a general object, of the invention to provide a device or unit of apparatus that is eiective to anchor-and pack off a string of tubing or the like employed to, conduct fluid out of a well. y

It is a general object; of my present invention *o-.provide adevice of the general character above referred to that can be used either in a flowing well' or a. well being pumped, to anchor and supporta flow string or 4tubing in the well. When the device that I have provided is set in operating'position a part of the load of the tubing may beimposed upon it while part of the load of. the. tubing can be carried in tension from the topoffthe-Well..

A. further. obiectof my presentinvention is to provide a structure of the general character referred to that can be run into a well which is fuil of, uid, whereupon the device can be tripped SD; Well fluid enters the tubing to develop a head A or pressure that actuates packing means enabling to involving mea-ns whereby fluid can be releasedl Vfrom the tubing above the packing means to relieve pressure so that the structure can be released.

It is a further object of my invention to provide a device .of the type referredV to including a safety Vmeans that can be ruptured or actuated if necessary. to relieve pressure from the packing structure-to release-it soth-a-t the equipment is released faor withdrawal fromi the well.

The various objects and features of my invenwardly from it to. asuitabl'e point in. the- Well or inthe casing.. Fig.v 2 is aview similar to Fig. l of the upper portion .01'.V upper half of the tool, Fig. 1 showing the parts in set or operating position` and., Fig. V2. showing the Aparts ina position to be run into the well. Fig. 3 is an enlarged detailed sectional .viewshowing the, .duid passage that conducts. uid from thetubing to the .chamber between the packers.` Fig. 4 is an enlarged view similar to Fig.` 3' showingthe safety means provided for releasing, pressure from between the packers. when necessary. Fig, 5 is an enlarged detailed sectionalI view of apart of .the Construction shown at the lower portion of Fig. 1, it being apart of the by-,pass. means included in the structure. Fig. 6 .is an Venlarged, detailed transverse sectional view, taken as. ndicatedby line 6 6 on 1. Fig. V7 isa side elevationof the seat part shownin Fig. 5 with. a part broken away to appear in. section. ,Y Fig. 8`is` an enlarged detailed view illustrating. the bayonet slot` construction employedA in the masterl control means. Fig... 9 is an enlarged detailed transverse sectional view taken as indicatedby line 9 9 onA Fig. 1. Fig. 10 is av perspective'view of. the lowerend V.portion of a go-devil that may be employedto release or actuate the bleeding means incorporated in the construction. Fig. 11 is an enlarged detailed;sectionalfview taken as indicated byA line II-II en Fig. 1andA Fig. `12 is a view similar to Fig. 2 showing the upper portion actuatedV so as to release the tool' for removal from the well. l y

The device that Ihave provided is useful generallygwhere itis desired to pack off and anchor the lowerend portion of astring of tubing or the like, and in moStcases the device vis'most useful when connected in a string of tubing or on the lower end'thereof, and is operated infa typical well' casing, andtherefore I' will in the following description make reference to such a situation'or application ofthe invention.

In the drawings the well casing is designated A and the tubing extending above the apparatus, which I will refer to as upper'sectionis designated'B. while thevtubing orlike element extending below the apparatus, which I willterm the lower tubing section, is designated' C. The casing A maybe considered a usualwell casing xed in a well bore and the ,upper` tubing section B may be a usual 'Qrord-ina'ry'string of tubing extending to the top of the well where it may be suitably supported in any usual manner. The lower tubing section C may extend a suitable distance below the apparatus and if the'well is tuated by uid pressure. The apparatus further l includes what may be termed a hydraulic control system which involves, generally, a main Cil or master control means G, bleeder means H,

by-pass means J and a safety pressure releasing means K.

The main body D of the apparatus is an elon- Y gate tubular part or structure which, in effect, forms the frame or body to which the other parts or elements are related.,` In the preferred form of the invention the tubular body is a straight or plain tubular structure which, in effect, forms a continuation of the tubing sections and acts to conduct fluid through the apparatus.

The anchor means E that I have provided is carried by the body D preferably at or around the. upper end portionthereof, and it involves,

generally, slips I 0, a support II for the slips I0,

a control ring I2, links I3 coupling the slips to the control ring, and a release spring I3a.

The support Il is shown surrounding the upper end portion of the body D and is carried by a coupling member I4 that screw threads to the upper end of the body D and serves as a means .of connecting the means G with the upper end Y portion of the body. The slip support is in the `5 Knature of an enlargement and has tapered faces .or guideways I5 that slidably support the slips I0. 'Ihe faces extend upwardly and outwardly as shown in Fig. 1, and the guideways and slips may have cooperating dove-tailed parts, as shown in Fig. 6, so that the slips are effectively coupled 'to the support.

'Ihe slips which are spaced circumferentially around the support II are shiftable longitudi-,

nally of the apparatus between a down position where their outer faces I6 are clear of the inner wall of casing A and an up position where their outer faces are in gripping engagement with the casing A, as shown in Figs. 1 and 6. In practice the outer faces I 6 of the slips may be formed `with teeth or wickers in the manner common to devices of this type.

The control ring I2 is slidably supported o! the body D below the slips I0 and their support II and the links I3 have their lower ends connected to the ring by pivotal connections I'I and have their upper ends connected to the lower ends of the slips I0 by pivotal connections I8. Through this construction as the ring I 2 is moved or reciprocated vertically on the'body D the slips I 0 are moved up and downvrelative to the support II. The spring I3a surrounds the body D -and acts under compression between the lower .end of the support II andthe ring I2 to nor-A mally yieldingly urge the ring I2 downward on the body so that the slips arenormally held in a down or retracted position. In practice the ring is recessed at I9 to receive the lower end portion of the spring I38L so that the spring can be made of substantial length.

The packing means F that I have provided is l carried by the body D and is preferably located immediat-ely below the means E. The packing ymeans'preferably includes a pair of spaced op-,-

posed packers 20 which face inwardly or toward .4 each other so that pressure applied between them acts to expand them outwardly into pressure engagement with the inner wall of the casing A.

The upper packer 20 is preferably in the form of a downwardly and outwardly ared ring or sleeve of rubber or the like carried by a sleeve 2I slidably supported on the body D. vThe sleeve 2| may be an extension or continuation of the ring I2 so that the upper packer moves in unison with the ring. The packer 20 is proportioned so that its small or upper end fits tight around the sleeve 2l and it is confined between a stop ring 22 and a retainer 23 held by a nut 24. The stop ring 22 bears against the lower end of the ring I2 while the retainer slidably fits over the lower end portion of the sleeve 2! and is held up by the nut 24 threaded on the lower end portion of the extension 2 I.

The lower packer is located on the body D at a point spaced somewhat below the upper packer and it includes an upwardly and outwardly flaring sleeve or collar of rubber or the like carried on a sleeve 2IEL between a stop ring 22a and a retainer 23a which is held by a nut 24a. The sleeve 2|a is similar to the sleeve 2I in that it is slidable on the body D. In the case illustrated the sleeve 2Ia is shown as an upward extension of a part of the means J to be hereinafter described. The stop ring 2?8L seats against the said part of means J while the retainer 23a is held in place by the nut 24a threaded on the upper end portion of the sleeve 2 Ia.

A port 25 is provided through the wall of body D between the packers just described so that the chamber 26 around the body between the packers is in free communication with the interior of or longitudinal passage through the body D.

The main or master control means G controls communication between the space X between the casing and tubing above the packing means F and the interior of the apparatus. In the preferred arrangement the means G is located immediately above the means E above described and it is a compact unit or construction conned to a position immediately above the means E. Further, it is preferred that the means G serve as a uid coupling or fluid connection between 'the upper end of the body D and the lower end of tubing section B, or such part as may be interposed between the lower end of tubing section B and the means G.

The means G in the form illustrated in the drawings, is, generally, a valve means and it includes what I will term a tubular valve body 21, the lower end of which is-threaded or otherwise suitably coupled to the coupler I4 that carries the support II of means E. A valve sleeve 28 surrounds and is movable longitudinally of the body 2I. One or more ports 29 are provided in the valve body 21 intermediate its ends and one or more ports 3D are provided in the Valve sleeve 28. The valve sleeve may be related to the body so that the ports 29 and 30 are out of register as shown in Fig. 12 or they may be positioned or related so that the ports 29 and 30 are in register, as shown in Fig. 2. Sealing means preferably in the form of spaced sealing rings 3| act between the valve body and valve sleeve to prevent leakage lengthwise between these parts in the region of the ports just described. In the particular case illustrated the sealing rings 3| 'ageesgosv 5 Ther-meansrG- includes; inwadditionitothe =va1ve parts above described, friction means=orfriction "members 33;'fcoupled"to the valvef-sl'eever-andifric- "tionallylengagingthetinner walllof casing A; and

a: r'eleasable 'connections isL provided 'betweenl the valve body andthe-valve lsleevewto Ahold lthe valve fsleeve down Whenthe Lports ZS'la-nd-4 3 Ularein 4reg:- ister;` The spring vmembers 33t which may bein the-nature of 'leaf springs, are'shownhaving `their lowerend portions secured to the :lower `endportions'of" the valve sleeveV 2li-'by fastening.v means '3'4 While the`upperend'portions extend-under a protective lip 35 on acap 36"' applied vto the upper vendeof the valvev sleeve. The\middle or central portions` of f the springs 33' arebowedf outwardly so that they slide or friotionallyy bearfon the inner walhofdthe casing|` A toresist 'rotative-or-length- Wise-movement inthe cas-ing:

The oontro1` forfthestructure just describe v'12gieferrably includesY a bayonet type control means and1 shown in` thedrawings it mayinclude# a pinsSf'l projecting from a part-fixed relative tothe valvefbodyasv for instance from the couplerf I4, and'` an kL-shaped vor bayonettypeslot 38` provided "in"tlie"l`ower endportion-of the valvetsleeve 28.

:In-etno preferred 'form ofmyinventionrlfform the bja'yonet-slot` so that it includesa-longitudinalfslot portionvorJ a lateralslotf portion b'; andf arecess--c fat the inner end ofth-ellateral portion bras-shown uinFigf 8foff the drawings.A The bayonetf type 'cont'rol is such thatY when the-.pin S'l'isin the-inner orI lateral portion l o of1 the slot- 38 the apparatus oanwbelmoved freel/uplor-down-in thelcasing; A without effecting movement-'ofthe valvet sleeve 2B? relative tothe valve body 2.11; When thev movementvofthe. apparatus is .down .relativetothe cas'.-

AingzAg .oriduring the operation where; the appara:- 1 tus..-is;'beingzrun into ethewell; the: springmembers 3'3 frictionallyf engage. the: inner` iwall.: ofr-` the .cas-

ing A; tolhold thepinlfdownnor'in engagement .Withzthal rec-essie.y imthef lateral? portion lnof; the

s101138. 'Dhusthe recessgoprevents thefpirr,l 3,1

y from. being displaced,l ory otherwise" moved from 1 the lateraltportiorr bofthe slotl 38a YToolose the valve; ot. the; means; Gi the apparatus israised in theme11,4 as ,by raising), of; thel upper tubing seotion. B. This,.1'e1ative movement,.removes.theA pin l. 31Qfrorn theJrecess-,c ,andwhen .the valve body 2.1v is rotatedrthe pin 3.7 ismoved outof the. portiomb j and' intolthe longtudinalportionaof the slot.

If: the valve body 21` is then moveduown, asby loiveringof. the upper tubing sectionB the pin'l wil1`move down through theslot' portiona and a relative positioning ofparts suchas is shownin Fig. 1'2 may result; causing communication to be The bleeder means Hi that Ihave provided" is preferably-located immediately above the means G- andfmay'serveto couple the means (r` with lthe upper section Bioff'tubing. The bleeder-means H may, so faras the lbroaderV principles offmyVi-nventi'onare concerned, belanysuitablei for-mor type of' construction'that canl be operated'to 'establish a bleeder opening or'connection Ibetween V4,4 arefabove andbelow the. ports Mrso thesleeve 1 43fserves; as an` eiective, closurepreyentngf leal:- Qage eitherl into: or; out. ot. the.y tubing tlzurouglr.v the ports 44. lathe-case: illustratedia suitable couplerl 45`A isprovided connecting-they lower end "of the body 40er-'means I-I withthe upperendoft'he valve body 21 'omeans G'. I y

The sleeve 43;-o'f themeans` Hfma'ybei' shifted or moved longitudinally in -tl'ie -bore` 42 touncover orf-open the-@ports lllJ by anyfsuitable means or device-lowered throughfthe tubing to engage-' or Igrapple-thesleeve. As van example of a means that-"maybeusedfa go-devil may be dropped throughhthe-tubing to strikeand move the sleeve 43': In the drawings I have shown a go-devil with-a headlt withI spaced ribs 41 to guide it in they tubing and to engage the upperend of the sleeve-43 for-movingor driving the sleeve down l"fromtheposition-showninv Fig. 2-to that shown 'in Figs. 12 `of the drawings. A suitable Weightor of; construction'the means J includes, generally,

an elongate liner 50 extending substantially the entire length ofA the, body Dand spaced: within the body so that there is an annular drainage channel 5l established between the liner 5u and the body. An inlet port' 52" is provided in the body D' abovel the` packer means say forl instance where the spring I3ab is located as shown in Fig,- 1, so that ilud accumulating in the space X'. nee. to, .enter rthe.annular space 5l between the liner and body. at' the lower end portionof the, apparatus the. means. includes a valve structure. that .oontrois..v thopassage or .flow of iludso. that. nuidcanonly ow down through the space- 5 Ij. Therparticular construction illustrated includes a', tubular center part BD- attached to the lowerendv of. the bodv'D by a coupling 5l and coupled.; to the upper end of. tubing section C by a coupling 62... A jacket or case 64 surrounds the tubular centerpar-t 60 'and' the sleeve or extension 21a above .described is attached to the upper end of case 64.4V The lower end of oase64. is pro,- vded with; a` removable seat ring and a valve 66 is slidably. carried. on the part GilV below the seat .titi-.ariel4 v.normally .yieldinely urgedY un lovY a spring.l 61.A so.: that entrance into the case64 is normally closedlor. sealed on'. The valve 66 is an annular or sleeve-luxe member slidably carried-onthe part, 6U and asealing ring iB-.is pro,- videdto,4 maintain auid tight connection be,- tweenfthese-parts Further, in practicea sealing ring 69,isy preferably provided between thevalve 66;Y andI seat bito, maintain a tight connection fat thispont., The upper'endportion of the oase 64 extends somewhat above the coupling 6l. that 'joinstheglower end of the body. D to vthe part 60 so-thatthere is an annular chamber formed at 1U. Ports 1l. in theflowerend portion of the body Dconneet the-annular space 5I withthechamber T0 and longitudinal channels 12 are provided in the exterior, of the coupler 5lv sov-that-there is free passagegov fluid. down from the chamber '1D between the coupler 6| andl case 64- to the interior of the; valve seat (i5. The upper end of the valvefseat'iisrecessed or notched at 'i5 so that thaparts; cannotgbecome engaged in a mannerl to sealoitreecommunioation between the passages Since the body D is equipped with the liner 50 that is spaced within it I may establish the port 25 above described by providing a body of welding material at 80 to form a bridge between the body D and liner 50 through which bridge the port 25 is formed.

,Through the construction that I have above described it will, under normal conditions, be

possible to disengage the apparatus so that it can beremoved from the casing at will. However, to provide communication from the chamber 26 between the packers 20 and the space X between the tubing and casing above the packing means F I provide the safety means K. The safety means K in its preferred form involves a plug 90 carried in an opening provided in the wall of the body D in the vicinity of the port 25. The plug 90 has a passageway 9| through it which passageway is normally closed by a break-disc 92 made tight by a sealing cup 93. Under normal conditions pressure in the chamber 2B will exceed that in the space X between the tubing and casing above the packing means F. Should it be desired to relieve the pressure from the chamber 26 a pressure can be established in the chamber 26 sufcient to exceed that in the space X and enough greater so that the break disc 92 fails. When the pressure in chamber 26 is relieved there will be an equal or corresponding pressure in both the chamber 26 and the space X yallowing the packers 20 to be released from the casing.

In practice .the apparatus that I have provided may be handled in various ways. For example, it may be lowered into a well or into the casing A on the lower end or in a string of tubing in much the same manner that an anchor or packer is lowered into a well. Under normal conditions as the apparatus is lowered into the well the slips |9 are down or retracted and the packers 20 will merely slide along on the inside of the casing A. Ordinarily it will be preferred that the means G be positioned so that the ports 29 and 30 are in communication so that pressures equalize around the various parts of the apparatus and do not in any way interfere with its free movement to the desired point in the casing A. It is Yto be understood, of course, that the means H is run into the well, set as shown in Fig. 2, so that the sleeve 43 closes the ports 4|.

With the apparatus located at the desired point in the well the operator may manipulate the means G to close passage therethrough and to do this he raises the tubing slightly, then rotates the tubing enough to disengage the bayonet slot connection above described and then lowers the tubing slightly, enough so that the valve sleeve 28 is moved relative to the valve body 21 so the parts are positioned as shown in Fig. 12 where the ports 29 and 30 are cut off or out of communication. Fluid from the well or from the lower tubing section C will then iiow up through the apparatus and into the upperV tubing section B either by reason of the formation pressure or because of swabbing or the action of a pump, with the result that a head of pressure is established in the body D of the apparatus, which pressure is communicated through the port 25 into chamber 26. This pressure expands the packers 20 so that they become firmly set in sealing and gripping engagement with the casing A, and thus establish a point of resistance so that the tubing can then be lowered causing the support I of the means E to wedge the slips I outwardly, with the result that the downward pressure or at least a substantial amount of downvward pressure, is taken by the slip construction or the means E. Y

As the apparatus operates flow will occur up through the body D and out through the upper tubing section B. Should there be a leakage of fluid into the space X when the head or pressure of such accumulation becomes suiiicient the valve 66 will be opened allowing such accumulated iiuid to by-pass or drain so that it entersthe casing A below the packing means F. It is to be observed however, that the valve 66 cooperates with the seat to check any upward flow or escape of pressure with the result that pressure may accumulate in the casing below the packing means F and thus be utilized to force fluid up through the tubing.

When it is desired to remove the apparatus pressure conditions may be such that it is merely necessary to lift the tubing section B which causes the support to lift out of or up relative to the slips IU allowing the slips to release the casing, whereupon the packers will slide up through the casing. Should it be necessary to relieve the head of pressure acting on the packers in chamberv 26 the means H may be opened or operated as by causing the sleeve 43 to be shifted to a position where the ports 4| are uncovered. Opening of the ports 4| will allow fluid in the tubing section B to drain into the space X between the tubing and the casing thus equalizing the pressure in chamber 26 and the space X, and thus relieving the pressure on the packers 20 so they can be moved in the casing. Another manner in which pressure can be relieved from the packers is by applying upward movement to the string of tubing so that the lower packer 20 is moved up applying pressure to the fiuid in chamber 26 so that the break disc 92 is ruptured, a1- lowing fluid in chamber'26 to escape into the bypass. This latter operation can be used to advantage when the tubing is sanded up preventing escape of pressure out through the port 25.

As a more specific example of the use of my apparatus if it is to be used in a completed well it is lowered into the well on a string of tubing with the 'ports 29 and 30 -in register, and when at the desired point in the well oil may be pumped down through the tubing to displace mud from the tubing and also from between the tubing and the casing. When this operation has been completed the means G can be operated as above described to close or cut off communication between ports 29 and 3U whereupon a swab may be run into the tubing and operated to move a fluid column up in the tubing. This swabbing operation will cause oil on the outside of the tubing to recede and liquid may be emptied from the casing above the tool. Thereafter the valve means J will close preventing any upward flow of uid through the by-pass means.

Should the well prove to be wet or should it be desired to kill it for any other reason prior to removing the tubing, mud can be pumped down through the casing around the outside of the upper tubing section B to pass through the by-pass means J until mud enters and fills the space between the casing A and the lower tubing section C. When such handling of mud has been complete the tool will be free for removal as the fluid pressures will be equalized and the spring i3 will act to retract the slips so that as soon as the tubing section B is moved or picked up the means G operates, causing the ports 29 and 30'to register so mud can drain out of the tubing through thesegportsfasthe tubing islpulled or withdrawnrfromthawell. Y

rWheref thegapparatus isV used in a pumping well releaseof theftool may be eiectedwithout pumping-mud into the fwell,V for instance, the means H may fbeioperated* as by'ago-devil or other suitablemeansrto` allow fluid to drain from the tubing. :Insawcase where the tubingrhas Ybecome sandedV up lthe* operator may pick thetubing up onmoveit up to cause the lowerpacker 2 0 kto move up andthus exertpressure in the chamber 2 6 Ytc burst thebreakable disc 92 Whichrelieves pressurefromthe chamber 26 into the byfpass and thus allows the, packer meansto release and be `freelymov-able in the casing A. As theappaijatus isplledfrom thewell fluid on the outside of the tubing A.section .B is `free to kdrain through the -byfpass means J.

Among theoutstanding features of the apparatusthat I have provided is that it is operable as above described-tto kill a Well, for instance, a h -igh pressuregas well, prior tovany' effort being made vto release l-the packer or hoist the tubing from the well. .Further, itis signicant to note thatwith my apparatus I am able to hold the upper lportion of` tubinglsection B in tension while thetubing is.npacked oif. Y It is further to be noted thatI havevprovded -avvconstructicn wherein the packers are of -suchvdesign and relationship that theyhave limited contact withthe wall of the casing and thus Aminimize.the danger of the packerssticking to the casing. With my construction thefiiuid vpressure behind the packers is the principal force eiecting the seal, and when this pressure is relieved the packers are released and free tomove. VThis feature of-my construction is to be contrasted with-the -usual packer which presents along surface in engagement withrthe casing and the weight of. tubing is utilized as the means for i'ec'ting the pressure onthe packer to cause sealing engagement with the lcasing. It is well known, of course, that a packer of rubber or the like, standingr in pressureengagement with a casingover alonfgperiod of time and at the temperature prevailing inra well, tend to cause bond-- ingof the'packers with the casing and, consequently, when I provide packers having limited contact with the casing I minimize the danger oi this vulcanizing or sticking action. Furthermore,

by my construction Ifavoid or eliminate the usual column of mud that stands above the usual i packer, making it dicult to remove.

, AHaving-described only a typical preferred form and application @my-invention, I do notwish to bel-imited or restricted to the specific details herein set forth, but ywish toreserve to myself any variations` or modications that may appear to those skilled in the art` and fall within the sc ope of the followingv claims:

Having described my invention, I claim:

w l.` Apparatusfor setting tubing in a casing including, a tubular body carried by and having communication with Athe tubing and having a lateral passage, packing means carried by the body below said passage and including spaced elements set in the casing by pressure from within the body, grip means carried by the body `and engageable with the casing and including a casing engaging element held by the packing means and an element cooperating with the casing engaging element and shiftable with the body, and a"f1owcontrol"for the lateral passage including a valve member carried'by the body'and shiftable relative thereto' into and out of'position where it closes the passage.

2. Apparatusgiorssetting tubing ima casingnelinslingL a tubulafbody carriedby and hating communication .with Y.the iftubing, 'Dacker .means carried by-*thebodyfandengageable with the cas--r ing, means lcontrolling' .communication vbetween the tubingJandCasing abo'v'ethef packer means,`a byfpass' means 'around the packer means connecting4 the casing .above theA packer means 1 with the vcasi-rig" ticwth; packer. means, and `Vmaaier means releasable't 'drainIiu-i'd from the'tub'in'g into the'c'asin'g above' the packer' means. Y

. 3. Apparatus for setting tubing 'inaeasing'in-l ludifng-a'tubular'bddy carre'd by Yarid'having r'nmunidatioh with "the" tbirig, "packing "means carried by" the body'jarfd ngage'able withthecasing and incddngtwo reiativeiymovable packers. bypass "means in 1 the body "extending past the packignieansarid connecting the' 'interior `ofthe casing 'above the "packing "means with the inte-v rior of "'t'he -casing'"bel0w"the packing 'means tli'ebddyhaving anperiiiig admitting fluidtothe packingmeansfbetween* the'packers, andamena# ber" carriedby thebo`dyoperable to` release pressure from betweenthe'packers-and tothe bypass meansupon the packers beingforced Vone toward thefother.

'4: @Apparatus 'for setting tubingA intar casing'- including, A'a tubiilar" body carried by' and having communication'withithe tubing, packing means carried Lbyithe bodyandv engageablawithfftheloas= ing Vami including two'irelatively :movable packers, thebody having-'an Opningfadmitting fiuid from the lbody-to the packing means between the 'packersQf `casing#gripping means 'carriedf-byi thebody aiid eifigagealelel withtheoasingf means' operably connecting the-gripping means` withy the packing means; and-*a Amember connecting f the gripping meansand ven'gagediiwiththe fcasin'g.- andzoperable relativa to :the-Lbody-to freleaseipressure. from-abetween thelpackers'iu-pont the;packe'i-s1fbeingy forced onatoward theother. 5:5. Apparatus forfsetting. tubing finf'ra casing lincluding, a `--tubulaw body; carried bycandahaving communication with 11 the z tubing.. packing 'means l carriedgbyfthe body: and-iengageable with fthe-casingfandrincluding twoA relatively movable packers. thebedyhaving an opemngadmitting fluid from the body tothe, packing means between the pack-i ers, casing gripping .means carried `bythe-.body and engageable with the casing, means-.operably connecting the gripping means with the packing meansVmeanse-carried by `the body above the packing `means controlling cemmunication be tween the tubing andcasing Aabovethe'v packing meansfand a member cllredl by the body Operable torelease pressure fronbetween the packers 56. "Apparatus vfor .setting vtubing Ain a casing' including, a tubularbdy .carriedby` and having communication with"thejtubing packingmeans :carried by thebody arid engageable withthe caslgaid 'iiillldiilg UWC fitll'y'mbvable pakis, the' body having an opening admittnguid'from 'the' body to" `the j packing "means "betwee`11"l`the packers', vmeans carried'by the body above the packing Ameans ccjritr'lling communication between' the tiibirig ,and casing above theA packing means, l'andai member 'carried by the' bo'dy operable to release pressure from' between the packers uponithe'- packers 'being' forced one? toward 4the other.

7. 'Apparatus for settingy tubing vin a casing including,A a tubular' body-carried by arid having communicaton'fwith the tubing, -ip ackng means 11 carried bythe bodyd and Iengageable with the casing and including: two relatively movable packers, the body having an opening admitting uid from' the body to the packing means between the packers, bleeder means carried by the body releasable to drain uid from the tubing above the packing means into the casing above the packing means, and a member carried by the body operable to release pressure from between the packers upon the packers being forced one toward the other.

8. Apparatus for setting tubing in a casing including, a tubular body carried by and having communication with the tubing. packing means carried by the body and engageable with the casing and including two relatively movable packers, the body having an opening admitting iiuid from the body to the packing means between the packers, casing gripping means carried by the body and engageable with the casing and operably connected with the packing means, means carried by the body above the packing means controlling communication between the tubing and casing above the packing means, bleeder means carried by the body releasable to drain fluid from the tubing above the packing means into the casing above the packing means, and a member carried by the body operable to release pressure from between the packers upon the packers being forced one toward the other.

9. Apparatus for setting a tubing in a casing including a tubular body carried by and having communication with the tubing, spaced packers on the body engageable with the casing, the

uppermost packer being shiftable longitudinally of the body, the body having an opening admitting fluid from the body between the packers to operate them, a wedge member on the body, slips operated by said member into engagement with the casing, means operatively connecting the slips with the shiftable packer, a lateral flow passage through the body above the packers from the inside of the body to the outside thereof, a sleeve on the body controlling said passage and having frictional engagement with vthe casing, and bypass means in the body extending past the packers and establishing communication between the interior of the casing above the packers and the interior of the casing below the packers.

10. Apparatus for setting a tubing in a casing including, a tubular body carried by and having communication with the tubing, spaced packers on the body engageable with the casing, the uppermost packer being shiftable longitudinally of the body, the body having an opening admitting fluid from the body between the packers to operate them, a wedge member on the body, slips operated by said member into engagement with the casing, means operatively connecting the slips with the shiftable packer, a lateral flow passage through the body above the packers from the inside of the body to the outside thereof, a sleeve on the body controlling said passage and having frictional engagement with the casing, bleeder means carried by the body above the 'packers releasable to drain fluid from the tubing into the casing above the packers, bypass means carried by the body extending past the packers and establishing communication between the interior of the casing above the packers and the interior of the casing below the packers, and a check valve carried by the body checking the ow upwardly in the bypass means.

11. Apparatus for use in connection witha casing and a, tubing within thev casing including. a central tubular body carried by the tubing and in communication therewith, a iluid pressure actuated packer means carried by the body to engage in the casing and including spaced opposed packers, grip means carried by the body to engage the casing, one of the packers being shiftable on the body, means operatively connecting the grip means and the shiftable packer, and a flow control carried by the body including an opening in the body connecting the tubing and casing above the packer means and a valve member controlling the opening and a friction member on the valve and engaging the casing whereby the valve is operated by manipulation of the tubing relative to the casing.

12. Apparatus for use in connection with a casing and a tubing within the casing including, a central rigid continuous tubular body connected to the tubing and having communication therewith, a iluid pressure actuated packer means on the body to engage in the casing, slip means carried on the body above the packer means to engage the casing and operated by the packer means, and a control for a lateral flow passage in the body including a valve member slidable on the exterior of the body above the packer means and controlling the passage and operated by manipulation of the tubing relative to the casing. the slip means including a support fixed on the body with upwardly and outwardly inclined faces and slips operable on said faces and coupled to the packer means.

13. Apparatus for use in connection with a casing and a tubing within the casing including, a central rigid continuous tubular body connected to the tubing and having communication therewith, a fluid pressure actuated packer means on the body to engage in the casing, grip means on the body above the packer means to engage the casing and operated by the packer means, and a control for a lateral flow passage in the body above the packer means including, a valve member on the body controlling the passage, friction members connected with the valve member to engage the interior of the casing, and a bayonet type control connection between the valve member and body.

14. Apparatus for use in connection with a casing and a tubing within the casing including, an elongate tubular main body, packer means carried by the body to engage the casing and including a packer shiftable along the body, slip means carried by the body and engageable with the casing and operatively connected with said packer, and means controlling communication between the tubing and casing above the packer means including a rigid tubular valve body connected with the upper end of said main body and projecting upward therefrom for connection with the tubing, the valve body having a lateral flow passage therethrough, a valve member controlling the passage and shiftable relative to said valve body, friction means on the valve member and engaging the casing, and a releaseable con- Liection between the valve body and valve mem- 15. Apparatus for use in connection with a casing and a tubing within the casing including, an elongate tubular body, packer means carried by the body to engage the casing and including longitudinally spaced packers one of which is shiftable along the body, slip means carried by the body to engage the casing and operatively connected with said packer, and means controlling communication between the tubing and casing above the packer means, the body having a by-pass opening connecting the interior of the casing above the packer means with the interior of the casing below` the packer means and extending through the packer means.

16. Apparatus for use in connection with a casing and a tubing within the casing including, an elongate tubular body, packer means carried by the body and engageable with the casing and including a packer shiftable along the body, slip means carried by the body and engageable with the casing and operatively connected with said packer, means controlling communication between the tubing and casing above the packer means, a by-pass extending through the packer means and connecting the casing above the packer means with the casing below the packer means, and a valve checking upward flow through the by-pass.

17. Apparatus for use in connection with a casing and a tubing within the casing including, an elongate tubular body, packer means carried `by the body and engageable with the casing and including a packer shiftable along the body, slip means carried by the body and operatively connected with said packer, means controlling communication between the tubing and casing above the packer means and operated by manipulation of the tubing relative to the casing, and bleeder means releasable to drain fluid from the tubing into' the casing above the packer means.

` 18. Apparatus for use in connection with a casing and a tubing within the casing including, an elongate tubular body, packer means carried by the body and engageable with the casing and including a packer shiftable along the body, slip means carried by the body and operatively connected with said packer, means controlling communication between the tubing and casing above the packer means, a by-pass means around the packer means connecting the casing above the packer means with the casing below the packer means, and bleeder means releasable to drain iiuid from the tubing into the casing above the packer means.

19. Apparatus for use in connection with a casing and a tubing within the casing including, an elongate tubular body, a iiuid pressure actuated packer means carried by the body and engageable with the casing and including a packer shiftable along the body, slip means carried by the body and engageable with the casing and operatively connected with said packer. means controlling communication between the tubing and casing above the packer means, bypass means around the packer means connecting the casing above the packer means with the casing below the packer means, and a normally closed iluid connection between the by-pass and packer means closed by a member subject to failure when pressure in the packer means exceeds that in the casing above the packer means.

JOHN S. PAGE.

REFERENCES CITED The following references are oi record in the le of this patent:

UNITED STATES PATENTS 

